crunches

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No, not sit-ups or crunches — this is the one low-impact exercise you should try to strengthen your core instead

No, you don’t need to do endless sit-ups or crunches to strengthen your core or build ab muscle — I’ve got an exercise for you that’s low impact, can be done anywhere using your bodyweight or a set of the best kettlebells, and slots easily into any core workout, functional routine, warm-up or strength session. Sure, there’s a place for…